Vitamin D plays an important part in the absorption of calcium by the body.
Where is vitamin D activated into a form that promotes calcium absorption?
Small intestine.
Vitamin D is not activated into another form.
Kidneys.
Large intestine.
The Correct Answer is C
Choice A rationale
The small intestine is where nutrients are absorbed, but it is not where vitamin D is activated. Vitamin D is first converted in the liver and then activated in the kidneys to promote calcium absorption.
Choice B rationale
This is incorrect because vitamin D is activated into a form that promotes calcium absorption. The active form is crucial for maintaining calcium and phosphate levels in the blood.
Choice C rationale
The kidneys play a significant role in converting vitamin D to its active form, calcitriol. This activated form is essential for the absorption of calcium in the intestines.
Choice D rationale
The large intestine is involved in water absorption and waste formation but not in the activation of vitamin D. The activation process primarily occurs in the kidneys and liver. .
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
While the increase in the number of drug addicts has led to stricter regulations, this is not the primary reason for the difficulty in obtaining narcotic prescriptions.
Choice B rationale
Controlled substances like narcotics are regulated by the FDA and the DEA to prevent misuse and ensure they are prescribed and dispensed safely and appropriately.
Choice C rationale
The Centers for Disease Control and Prevention (CDC) does not regulate controlled substances; they focus on public health issues and disease prevention.
Choice D rationale
The Drug Enforcement Agency (DEA) does determine the risk for addiction, but it is the FDA that enforces regulations related to controlled substances. .
Correct Answer is D
Explanation
Choice A rationale
Weight-bearing exercises are beneficial for cardiovascular health and bone density, and substituting them with yoga may not address the underlying factors contributing to hypertension.
Choice B rationale
Decreased fluid intake is not generally recommended as it can lead to dehydration, which may negatively impact blood pressure. Increased potassium intake is beneficial, but not reducing fluid intake.
Choice C rationale
Stress reduction is indeed beneficial for managing hypertension, but increased protein intake is not specifically indicated for lowering blood pressure and may have other health implications.
Choice D rationale
Weight reduction and decreased sodium intake are well-established lifestyle changes for managing hypertension. Reducing sodium helps lower blood pressure, and weight loss reduces the strain on the cardiovascular system.
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